Home / 112,375.79-155,078.82-61,388.90

Finding the Fourth Proportional to 112,375.79, 155,078.82 and 61,388.90

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Solution

The fourth proportional to 112,375.79, 155,078.82 and 61,388.90 is: 84,716.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,375.79 : 155,078.82 = 61,388.90 : x
  2. Step 2: Convert to fraction form
    112,375.79/155,078.82 = 61,388.90/x
  3. Step 3: Cross multiply
    112,375.79x = 155,078.82 × 61,388.90
  4. Step 4: Simplify right side
    112,375.79x = 9,520,118,173.10
  5. Step 5: Solve for x
    x = 9,520,118,173.10/112,375.79
  6. Step 6: Final answer
    x = 84,716.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.